Datasheet LTC3727, LTC3727-1 (Analog Devices) - 2
| Manufacturer | Analog Devices |
| Description | High Efficiency, 2-Phase Synchronous Step-Down Switching Regulators |
| Pages / Page | 32 / 2 — ABSOLUTE AXI U RATI GS (Note 1). PACKAGE/ORDER I FOR ATIO. Order Options. … |
| File Format / Size | PDF / 381 Kb |
| Document Language | English |
ABSOLUTE AXI U RATI GS (Note 1). PACKAGE/ORDER I FOR ATIO. Order Options. ELECTRICAL CHARACTERISTICS The
Model Line for this Datasheet
Text Version of Document
LTC3727/LTC3727-1
W W W U ABSOLUTE AXI U RATI GS (Note 1)
Input Supply Voltage (VIN)...36V to –0.3V ITH1, ITH2, VOSENSE1, VOSENSE2 Voltages ...2.7V to –0.3V Top Side Driver Voltages Peak Output Current <10μs (TG1, TG2, BG1, BG2) ... 3A (BOOST1, BOOST2) ...42V to – 0.3V INTVCC Peak Output Current .. 50mA Switch Voltage (SW1, SW2) ...36V to – 5V Operating Temperature Range (Note 2) .. – 40°C to 85°C INTVCC, EXTVCC, (BOOST1-SW1), Junction Temperature (Note 3) ... 125°C (BOOST2-SW2) ..8.5V to – 0.3V Storage Temperature Range ... – 65°C to 125°C RUN/SS1, RUN/SS2, PGOOD ... 7V to – 0.3V Lead Temperature SENSE1+, SENSE2 +, SENSE1–, (Soldering, 10 sec, G Package)... 300°C SENSE2 – Voltages ...14V to – 0.3V Solder Reflow Temperature (UH Package) ... 265°C PLLIN, PLLFLTR, FCB Voltages ... INTVCC to –0.3V
U W U PACKAGE/ORDER I FOR ATIO
ORDER PART TOP VIEW ORDER PART TOP VIEW – + NUMBER NUMBER RUN/SS1 1 28 PGOOD NC SENSE1 SENSE1 NC RUN/SS1 PGOOD TG1 SW1 SENSE1+ 2 27 TG1 LTC3727EG 32 31 30 29 28 27 26 25 LTC3727EUH-1 SENSE1– 3 26 SW1 LTC3727EG-1 V 1 24 OSENSE1 BOOST1 V 4 25 OSENSE1 BOOST1 LTC3727IG-1 PLLFLTR 2 23 VIN PLLFLTR 5 24 VIN PLLIN 3 22 BG1 PLLIN 6 23 BG1 FCB 4 21 EXTVCC 33 FCB 7 22 EXTVCC I 5 20 TH1 INTVCC I 8 21 TH1 INTVCC SGND 6 19 PGND SGND 9 20 PGND 3.3V 7 18 OUT BG2 UH PART 3.3V 10 19 OUT BG2 I 8 17 TH2 BOOST2 MARKING I 11 18 TH2 BOOST2 9 10 11 12 13 14 15 16 – + V 12 17 OSENSE2 SW2 NC 37271 TG2 NC SW2 SENSE2– 13 16 TG2 OSENSE2V SENSE2 SENSE2 RUN/SS2 SENSE2+ 14 15 RUN/SS2 UH PACKAGE 32-LEAD (5mm × 5mm) PLASTIC QFN G PACKAGE 28-LEAD PLASTIC SSOP TJMAX = 125°C, θJA = 34°C/W EXPOSED PAD (PIN 33) IS SGND TJMAX = 125°C, θJA = 95°C/W (MUST BE SOLDERED TO PCB)
Order Options
Tape and Reel: Add #TR Lead Free: Add #PBF Lead Free Tape and Reel: Add #TRPBF Lead Free Part Marking: http://www.linear.com/leadfree/ Consult LTC Marketing for parts specified with wider operating temperature ranges.
ELECTRICAL CHARACTERISTICS The
●
denotes the specifications which apply over the full operating temperature range, otherwise specifications are at TA = 25
°
C. VIN = 15V, VRUN/SS1, 2 = 5V unless otherwise noted. SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS Main Control Loops
VOSENSE1, 2 Regulated Feedback Voltage (Note 4); ITH1, 2 Voltage = 1.2V ● 0.792 0.800 0.808 V IVOSENSE1, 2 Feedback Current (Note 4) – 5 – 50 nA VREFLNREG Reference Voltage Line Regulation VIN = 3.6V to 30V (Note 4) 0.002 0.02 %/V 3727fc 2
W W W U ABSOLUTE AXI U RATI GS (Note 1)
Input Supply Voltage (VIN)...36V to –0.3V ITH1, ITH2, VOSENSE1, VOSENSE2 Voltages ...2.7V to –0.3V Top Side Driver Voltages Peak Output Current <10μs (TG1, TG2, BG1, BG2) ... 3A (BOOST1, BOOST2) ...42V to – 0.3V INTVCC Peak Output Current .. 50mA Switch Voltage (SW1, SW2) ...36V to – 5V Operating Temperature Range (Note 2) .. – 40°C to 85°C INTVCC, EXTVCC, (BOOST1-SW1), Junction Temperature (Note 3) ... 125°C (BOOST2-SW2) ..8.5V to – 0.3V Storage Temperature Range ... – 65°C to 125°C RUN/SS1, RUN/SS2, PGOOD ... 7V to – 0.3V Lead Temperature SENSE1+, SENSE2 +, SENSE1–, (Soldering, 10 sec, G Package)... 300°C SENSE2 – Voltages ...14V to – 0.3V Solder Reflow Temperature (UH Package) ... 265°C PLLIN, PLLFLTR, FCB Voltages ... INTVCC to –0.3V
U W U PACKAGE/ORDER I FOR ATIO
ORDER PART TOP VIEW ORDER PART TOP VIEW – + NUMBER NUMBER RUN/SS1 1 28 PGOOD NC SENSE1 SENSE1 NC RUN/SS1 PGOOD TG1 SW1 SENSE1+ 2 27 TG1 LTC3727EG 32 31 30 29 28 27 26 25 LTC3727EUH-1 SENSE1– 3 26 SW1 LTC3727EG-1 V 1 24 OSENSE1 BOOST1 V 4 25 OSENSE1 BOOST1 LTC3727IG-1 PLLFLTR 2 23 VIN PLLFLTR 5 24 VIN PLLIN 3 22 BG1 PLLIN 6 23 BG1 FCB 4 21 EXTVCC 33 FCB 7 22 EXTVCC I 5 20 TH1 INTVCC I 8 21 TH1 INTVCC SGND 6 19 PGND SGND 9 20 PGND 3.3V 7 18 OUT BG2 UH PART 3.3V 10 19 OUT BG2 I 8 17 TH2 BOOST2 MARKING I 11 18 TH2 BOOST2 9 10 11 12 13 14 15 16 – + V 12 17 OSENSE2 SW2 NC 37271 TG2 NC SW2 SENSE2– 13 16 TG2 OSENSE2V SENSE2 SENSE2 RUN/SS2 SENSE2+ 14 15 RUN/SS2 UH PACKAGE 32-LEAD (5mm × 5mm) PLASTIC QFN G PACKAGE 28-LEAD PLASTIC SSOP TJMAX = 125°C, θJA = 34°C/W EXPOSED PAD (PIN 33) IS SGND TJMAX = 125°C, θJA = 95°C/W (MUST BE SOLDERED TO PCB)
Order Options
Tape and Reel: Add #TR Lead Free: Add #PBF Lead Free Tape and Reel: Add #TRPBF Lead Free Part Marking: http://www.linear.com/leadfree/ Consult LTC Marketing for parts specified with wider operating temperature ranges.
ELECTRICAL CHARACTERISTICS The
●
denotes the specifications which apply over the full operating temperature range, otherwise specifications are at TA = 25
°
C. VIN = 15V, VRUN/SS1, 2 = 5V unless otherwise noted. SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS Main Control Loops
VOSENSE1, 2 Regulated Feedback Voltage (Note 4); ITH1, 2 Voltage = 1.2V ● 0.792 0.800 0.808 V IVOSENSE1, 2 Feedback Current (Note 4) – 5 – 50 nA VREFLNREG Reference Voltage Line Regulation VIN = 3.6V to 30V (Note 4) 0.002 0.02 %/V 3727fc 2
